Yet another memory leak in Tornado
Yet another memory leak in Tornado

If you have lots of expiring timeouts the memory will just keep piling
due to :
https://github.com/tornadoweb/tornado/blob/master/tornado/ioloop.py#L919-L926

To solve that I replace the timeout object witrh a Dummy object
reference, so basically making the Timeout object free for garbage collection.

EvanKrall/hacheck,EvanKrall/hacheck